John Gasaway breaks down the nation's top 10 defenses heading into the 2014-15 college basketball season. He leads with Arizona, which returns nearly all of its key players from last season's elite defense.

John Gasaway ranks the 10 hottest and and coldest teams in college basketball over the past 10 games using per-possession scoring margins. While Louisville tops the hot list, Texas sits atop the cold ranks.

John Gasaway breaks down the games of the four key contributors in Arizona's loaded frontcourt, explaining both the unit's elite potential and the risks involved in being such an interior-oriented team.

John Gasaway writes that the Pac-12's big three -- Oregon, Arizona and UCLA -- are legitimate threats to succeed in March, regardless of the Pac-12's current reputation. He also handicaps the league's regular-season title race.